DOCTOR NIGHTLIFE has several times been mesmerized by dobro doyen Jerry Douglas's magic fingers, and she expects to be again, when Douglas, Russ Barenberg and Edgar Meyer roll out the CBGJ's -- country, bluegrass and jazz -- Saturday at the Barns of Wolf Trap ($14; 703/938-2404 or 202/432-0200). Elsewhere:

FRIDAY

SPORTZ RESORTS -- After nearly two years, ComedySportz-Washington finally has a permanent venue at Bella's, 2485 S. Glebe Rd. (at 395) in Arlington. Matches are 8 and 10:30 Fridays and Saturdays; reservations 703/471-5212 (check out the Feb/Fri discount).

WEST SIDE STORY -- It's the stuff of legends -- skinny kid from Chicago's West Side working at a car wash by day ("senior buffer") and playing twangy solid-body blues at night. And like Toy Caldwell, without a pick. Lil' Ed Williams not only learned his slide stuff from his uncle, the legendary J. B. Hutto, but he still plays Hutto's guitar; and combines a wired, duck-walkin' stage presence with a straight-on vocal intensity. Lil' Ed & the Blues Imperials play Friday at 8 X 10 in Baltimore ($5; 301/625-2000) and Sunday at Broad St. Seafood in Falls Church ($7; 703/681-8536).

ALIAS SMITH & JONES -- The faces may be familiar, but we'll go through the name game one more time. Pink & Black was then, the Reluctant Playboys are now. And the Capital Hillbillies are half-Wanktone -- Mike Maxwell and Daniel Martin (who is now who was Dan Palenski then). Got it? Good. Get it at d.c. space ($5; 202/347-1445).

SATURDAY

ALIAS SMITH & JONES 2 -- Alter Ego was then, Sunday's Child is now, and drummer Erin Conley is so now he's making his first public appearance with this highly-rated alternative band (at Quicksilver's in Herndon; $3; 703/471-1888).

SWINGIN' IN THE SUBURBS -- You can call it Rockville. Or you can call it North Bethesda. Or you can call it Potomac. Whatever: the Washington Swing Dance Committee's jitterbug clinic and dance concert with Little Red & the Renegades moves out to the Herbert Hoover Jr. High School cafeteria at Post Oak Road and Tuckerman Lane ($7; 301/779-0234).

SUNDAY

FROM MEMPHIS TO MOBILE TO MEDIVAL -- If music is the universal language, then the blues is blood type O -- a universal donor of both sympathy and sustenance. On a quirky and fascinating whim, National Heritage Award-winning blues traditionalist John Jackson and the ever-eclectic Hesperus (Tina Chancey, Bruce Hutton and Scott Reiss) join forces for a whole new look at the birth of the blues at Meridian House International, 16th Street and Crescent Place NW. This musical tour begins in 13th-century Europe and winds its way to the more familiar milestones -- Mississippi, St. Louis, Chicago -- followed by a champagne reception ($15, seniors and students $10; 703/525-7550).

THE GREENING OF THE GREEN -- Sure, and it's that time again, to start raisin' the scratch for the St. Patrick's Day parade. The first round starts at 3 at Flanagan's ($5; 301/986-1007) with Kevin James & Larry Conneen, Irish Breakdown, Michael Kelley, Pat Garvey, Atlantic Bridge, Gross National Product with John Lyon, Martin O'Malley and Wit's End.

TUESDAY

HIGHBROW JITTERBUG -- Say your sign is Buenos Aires? Take a side trip to the Kennedy Center to see the American Ballroom Theater turn the Eisenhower Theater into a tango palace, or a mambo kingdom. Or the Rainbow Room. Go opening night and partner up with the pros afterway in the Grand Foyer for dancing with the Richard Bray Big Band. The American Ballroom Theater performs Tuesday through Sunday ($18 to $31; 202/462-4600 or 800/444-1324).

SONGWRITERS' SHOWCASE -- Three favorites of the credit-reading cult, songwriters Julie Gold (who wrote the triply Grammy-nominated "From a Distance" for Bette Midler), "Prairie Home" longtime companion Bill Staines and the Nashville-based progressive/folk favorite Hugh Moffatt, line up at the Birchmere ($10; 202/432-0200).

THURSDAY

UNPLUGGED AND PERSONAL -- The Redeemers are such a good dance band that Mark Mansfield's songs don't always get as much attention as they should. But Mansfield goes acoustic (with guitarist John Stanton riding shotgun) to open for stellar songwriter Chris Smither at the Folkal Point in Ellicott City ($7; 301/982-0686 or 301/381-2460).